Clamping and holding type telescopic pallet fork with compatibility and using method of clamping and holding type telescopic pallet fork

Abstract

The invention discloses a clamping type telescopic pallet fork with compatibility. The clamping type telescopic pallet fork comprises a control system, a pallet fork body, a telescopic pallet fork body connected with the pallet fork body in a sliding mode, a carrying plate located at the bottom of the pallet fork body and a lifting stop lever located at the front end of the telescopic pallet fork body. The number of the lifting stop levers is two, the two lifting stop levers are arranged in the length direction of the telescopic pallet fork in a spaced mode, and the front lifting stop lever and the rear lifting stop lever are matched with the telescopic pallet fork to clamp goods. The control system controls stretching and retracting of the telescopic pallet fork and lifting of the lifting stop lever. The clamping type telescopic pallet fork with compatibility is provided with the two lifting stop levers which are matched with each other, and the clamping and carrying effects on cargoes with all widths smaller than the width of the telescopic pallet fork can be achieved through matching of the lifting stop levers and the pallet fork.

Description

Technical Field

[0001] The present invention relates to the field of cargo forks, and in particular to a compatible clamping telescopic cargo fork and a method of using the same. Background Art

[0002] In existing high-bay warehouses, goods are transported by means of a variety of equipment working together to stack or remove goods. However, the core equipment of an automated high-bay warehouse is the stacker, which moves goods from the ground to the shelves or takes goods off the shelves.

[0003] Chinese patent number: 201811618671.9 discloses a hook-pull fork, comprising a fork body and a drive assembly for driving the fork body to extend / retract, the drive device being in transmission connection with the fork body, and the pickup end of the fork body being movably provided with a finger for dragging goods and a reduction motor for controlling the movement of the finger. The drive device of the hook-pull fork can drive the fork body to extend or retract, and the pickup end of the fork body is provided with a finger, which can enable the fork body to drag goods off the shelf during the retraction process, thereby achieving the purpose of quick pickup. The finger also restricts the goods from falling off the fork body, thereby improving the stability of the hook-pull fork in picking up goods and making the hook-pull fork more convenient to use.

[0004] However, in the above-mentioned technology, the fork finger 1 can only work on cargo with a sufficiently large width. When the cargo is narrow, the fork finger may not contact the cargo and thus fail to work on the cargo. Therefore, this type of hook fork has a limited compatibility range for cargo widths and cannot meet the needs of working scenarios that require handling cargo of various widths. Summary of the Invention

[0005] The object of the present invention is to provide a compatible clamping telescopic fork and a method of using the same. The compatible clamping telescopic fork is provided with two mutually cooperating lifting levers. Through the cooperation of the lifting levers and the fork, the cargo of all widths smaller than the width of the telescopic fork can be clamped and carried.

[0006] To achieve the above-mentioned object, the present invention provides a compatible clamping telescopic fork, comprising a control system, a fork body, a telescopic fork slidably connected to the fork body, a loading plate located at the bottom of the fork body, and a lifting lever located at the front end of the telescopic fork;

[0007] Two lifting bars are provided, and the two lifting bars are spaced apart along the length direction of the telescopic fork. The front and rear lifting bars cooperate with the telescopic fork to clamp the cargo;

[0008] The control system controls the extension and retraction of the telescopic fork and the raising and lowering of the lifting lever.

[0009] Preferably, the compatible clamping telescopic fork further includes a lifting drive system, and both ends of the lifting lever are respectively connected to the lifting drive system;

[0010] The control system is electrically connected to the lifting drive system.

[0011] Preferably, the lifting drive system includes a drive motor, a synchronous pulley, a connecting plate and a synchronous belt cooperating with the synchronous pulley, the connecting plate is fixedly connected to the synchronous belt, and the end of the lifting lever is connected to the connecting plate.

[0012] Preferably, the telescopic fork is provided with a lifting channel cooperating with the lifting lever, and the connecting plate is lifted and lowered along the lifting channel.

[0013] Preferably, a waist-shaped hole is provided on the connecting plate, and the lifting lever cooperates with the waist-shaped hole.

[0014] Preferably, a support plate is provided at one end of the lifting channel close to the cargo, and the support plate limits the lifting stop rod.

[0015] Preferably, a stop position is provided on the lifting channel, and the lifting stop rod cooperates with the stop position when it is lowered into position.

[0016] The present invention also provides a method for using the compatible clamping telescopic fork, the method comprising:

[0017] Step 1: Raise the lifting lever and extend the telescopic fork forward;

[0018] Step 2: After the telescopic fork is extended to its full position, the first lifting lever at the front end of the telescopic fork is lowered;

[0019] Step 3: The telescopic fork retracts, and the first lifting lever pushes the cargo forward, and the cargo moves into the fork body through the loading plate;

[0020] Step 4: Lower the second lifting lever behind the cargo, raise the first lifting lever, extend the telescopic fork forward, and the second lifting lever 42 pushes the cargo to the target position;

[0021] Step 5: After the telescopic fork is extended to the right position, it begins to retract until it is retracted to the right position.

[0022] When the compatible telescopic fork is loaded, use steps 1-3; when the compatible telescopic fork is unloaded, use steps 4-5.

[0023] Preferably, in step 1, the compatible clamping telescopic fork stops at a higher position. In step 2, after the telescopic fork is extended into place, the compatible clamping telescopic fork first descends to a position where the front end height of the loading plate is adapted to the bottom height of the cargo, and then the first lifting lever descends.

[0024] According to the above technical solution, the two lifting bars arranged at intervals along the length direction of the telescopic fork of the present invention can complete the clamping of the goods by cooperating with each other. When the goods on the stacking rack need to be transported out, the clamping telescopic fork can be first raised to a height suitable for the position of the goods, and then both lifting bars are raised, and then the telescopic fork is extended. During the extension of the telescopic fork, the first lifting bar located in the front will pass over the goods from above to the front of the goods. After the telescopic fork moves into place, the first lifting bar drops to a position below the upper end surface of the goods. At this time, the telescopic fork is retracted, and the first lifting bar moves backward with the retracted fork. After contacting the goods, it pushes the goods backward until the goods are pushed onto the loading plate.

[0025] When the cargo on the compatible clamping telescopic fork needs to be transported to the stacking rack, the compatible clamping telescopic fork is first moved to a position at the same height as the target position, then the first lifting lever is raised and the second lifting lever located at the rear is lowered. Subsequently, the telescopic fork is extended forward. As the telescopic fork moves, the second lifting lever also moves forward. During the forward movement, the second lifting lever pushes the cargo forward continuously, so that the cargo can leave the loading plate and reach the stacking rack.

[0026] By means of the telescopic fork and the lifting lever, a cargo accommodating space is formed on the compatible clamping telescopic fork. Cargo smaller than the width of the telescopic fork can be accommodated in the accommodating space. Therefore, the compatible clamping telescopic fork can adapt to a wider range of cargo widths.

[0027] The length of the telescopic fork when retracted determines the length of cargo that the compatible clamping telescopic fork can carry. When cargo is pushed, the first lifting bar moves backward with the telescopic fork, pushing the cargo onto the loading platform. During this process, the second lifting bar is set to the upper position, so the cargo length is not limited by the distance between the first and second lifting bars. Therefore, theoretically, the compatible clamping telescopic fork can accommodate a wider range of cargo lengths. However, when the second lifting bar is lowered, it can limit the position of cargo on the loading platform, ensuring that the cargo remains stable on the loading platform during the lifting and lowering movement of the compatible clamping telescopic fork. Furthermore, during unloading, the second lifting bar needs to be located at the rear end of the cargo to effectively push the cargo. Therefore, the distance between the first and second lifting bars is preferably larger to accommodate larger cargo lengths.

[0028] Therefore, by using the compatible clamping telescopic fork, the cargo of all widths smaller than the width of the telescopic fork can be clamped and carried through the cooperation of the lifting lever and the telescopic movement of the telescopic fork.

[0029] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following detailed description, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0031] Figure 1 It is a schematic diagram of a compatible clamp-type telescopic fork extended into position;

[0032] Figure 2 It is a schematic diagram of the connection between the telescopic fork and the lifting lever;

[0033] Figure 3 yes Figure 2 A partial view of

[0034] Figure 4 It is a schematic diagram of the connection between the telescopic fork and the lifting lever;

[0035] Figure 5 It is a schematic diagram of a compatible clamp-type telescopic fork retracted into position.

[0036] Description of Reference Numerals

[0037] 1 Fork body 2 Telescopic fork

[0038] 3 loading plate 41 first lifting lever

[0039] 42 Second lifting lever 51 Driving motor

[0040] 52 synchronous pulley 53 synchronous belt

[0041] 54 connecting plate 61 guide sleeve

[0042] 62 guide rod 21 lifting channel

[0043] 22 back plate 43 elastic protective cover

[0044] 541 waist-shaped hole DETAILED DESCRIPTION

[0045] The following describes the specific embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0046] In the present invention, unless otherwise stated, directional words contained in terms such as "front end, bottom, front and back, both ends" merely represent the orientation of the term in normal use, or are common names understood by those skilled in the art, and should not be regarded as limitations on the term.

[0047] See also Figure 1-5 The said compatible clamping telescopic fork comprises a control system, a fork body 1, a telescopic fork 2 slidably connected to the fork body 1, a loading plate 3 located at the bottom of the fork body 1, and a lifting lever located at the front end of the telescopic fork 2;

[0048] Two lifting bars are provided, and the two lifting bars are spaced apart along the length direction of the telescopic fork 2. The front and rear lifting bars cooperate with the telescopic fork 2 to clamp the goods.

[0049] The control system controls the extension and retraction of the telescopic fork 2 and the raising and lowering of the lifting lever.

[0050] Through the implementation of the above technical solution, the two lifting bars spaced apart along the length of the telescopic fork 2 can cooperate to complete the clamping of the goods. When the goods on the stacking rack need to be transported out, the clamping telescopic fork can be first raised to a height suitable for the position of the goods, and then both lifting bars are raised, and then the telescopic fork 2 is extended. During the extension of the telescopic fork 2, the first lifting bar 41 located in the front will pass over the goods from above to the front of the goods. After the telescopic fork 2 moves into place, the first lifting bar 41 drops to a position below the upper end surface of the goods. At this time, the telescopic fork 2 is retracted, and the first lifting bar 41 moves backward with the retracted fork 2. After contacting the goods, it pushes the goods backward until the goods are pushed onto the loading plate 3.

[0051] When the goods on the compatible clamping telescopic fork need to be transported to the stacking rack, the compatible clamping telescopic fork is first moved to a position at the same height as the target position, then the first lifting lever 41 is raised and the second lifting lever 42 located at the rear is lowered. Subsequently, the telescopic fork 2 is extended forward. As the telescopic fork 2 moves, the second lifting lever 42 also moves forward. During the forward movement, the second lifting lever 42 pushes the goods forward continuously, so that the goods can leave the loading plate 3 and reach the stacking rack.

[0052] By means of the telescopic fork 2 and the lifting lever, a storage space for goods is formed on the compatible clamping telescopic fork. Goods smaller than the width of the telescopic fork 2 can be accommodated in the storage space. Therefore, the compatible clamping telescopic fork can adapt to a wider range of cargo widths.

[0053] The length of the telescopic fork 2 when retracted determines the length of cargo that the compatible clamping telescopic fork can carry. When cargo is pushed, the first lifting bar 41 moves backward with the telescopic fork 2, pushing the cargo onto the loading platform 3. During this process, the second lifting bar 42 is set to the high position, so the cargo length is not limited by the distance between the first and second lifting bars 41, 42. Therefore, theoretically, the compatible clamping telescopic fork can accommodate a wider range of cargo lengths. However, when the second lifting bar 42 is lowered, it can limit the position of cargo on the loading platform 3, ensuring that the cargo remains stably on the loading platform 3 during the lifting and lowering movement of the compatible clamping telescopic fork. Furthermore, during unloading, the second lifting bar 42 needs to be located at the rear end of the cargo to effectively push the cargo. Therefore, the distance between the first and second lifting bars 41, 42 is preferably larger to accommodate larger cargo lengths.

[0054] Therefore, by using the compatible clamping telescopic fork, the cargo of all widths smaller than the width of the telescopic fork 2 can be clamped and carried through the coordination of the lifting lever and the telescopic movement of the telescopic fork 2 .

[0055] Preferably, a slope is provided on the side of the loading plate 3 facing the stacking rack, and the goods can be smoothly transferred between the loading plate 3 and the stacking rack through the slope.

[0056] More preferably, both ends of the loading plate 3 are provided with a slope, and the telescopic fork 2 is configured to be able to extend and retract in two directions, so that the compatible clamping telescopic fork can more conveniently transfer goods between multiple stacking racks.

[0057] The telescopic fork 2 comprises multiple slidingly connected fork sections. When the telescopic fork 2 needs to be extended or retracted, the multiple sections slide relative to each other to achieve this effect. To extend the telescopic fork 2, the multiple sections move away from the fork body 1 to achieve this effect. To retract the telescopic fork 2, the multiple sections move toward the fork body 1 to achieve this effect. During the relative sliding of the multiple sections, when the telescopic fork 2 is fully extended, the innermost fork section is at the furthest position. A first lifting lever 41 and a second lifting lever 42 are respectively disposed at each end of the innermost fork section.

[0058] The control system also includes a plurality of sensors for detecting whether the compatible clamping telescopic fork is raised to the correct position, whether the telescopic fork 2 is extended to the correct position, and whether the lifting lever is raised or lowered to the correct position.

[0059] In one embodiment, when cargo needs to be removed from the stacking rack, the control system will control the extension of the telescopic fork 2 only after the sensors indicating that the first and second lifting levers 41 and 42 have risen to their proper positions are activated. Once the telescopic fork 2 has fully extended, the first lifting lever 41 will descend. Once the first lifting lever 41 has fully descended, the telescopic fork 2 will retract. Once the telescopic fork 2 has fully retracted, the compatible clamping telescopic fork has completed the cargo removal command and will then execute other action commands. Therefore, the control system uses multiple sensors to determine the position and state of the compatible clamping telescopic fork and controls the extension and extension of the telescopic fork 2 and the raising and lowering of the lifting levers.

[0060] In this embodiment, preferably, the compatible clamping telescopic fork further includes a lifting drive system, and both ends of the lifting lever are respectively drive-connected to the lifting drive system;

[0061] The control system is electrically connected to the lifting drive system.

[0062] The two lift drive systems at both ends of the lift bar are arranged as a set of lift drive systems. The simultaneous operation of the lift drive systems in one set allows the two ends of the lift bar to work in coordination, thereby ensuring the reliability of the lift bar. Preferably, the lift drive systems in the same set are arranged relative to each other so that the lift bar can remain horizontal. Furthermore, when the lift drive systems in the same set operate synchronously, the lift bar can maintain a horizontal position during the lifting process.

[0063] The lifting drive system can be set as a mechanism that can reciprocate in a linear direction, such as a screw-nut mechanism, where the lifting lever is connected to the nut. As the screw rotates, the nut structure can drive the lifting lever to move up and down.

[0064] The control system controls the actions of the same set of lifting drive systems, thereby being able to drive the lifting levers connected to the set of lifting drive systems.

[0065] The control system controls the forward and reverse rotation of the lifting drive to achieve the raising or lowering operation of the lifting lever.

[0066] In this embodiment, preferably, the lifting drive system includes a drive motor 51, a synchronous pulley 52, a connecting plate 54 and a synchronous belt 53 cooperating with the synchronous pulley 52, the connecting plate 54 is fixedly connected to the synchronous belt 53, and the end of the lifting lever is connected to the connecting plate 54.

[0067] The two synchronous pulleys 52 are arranged at intervals along the height direction. The driving motor 51 drives the synchronous pulleys 52 to rotate. The connecting plate 54 is fixedly connected to the side of the synchronous belt 53 close to the lifting lever. As the synchronous pulley 52 rotates, the connecting plate 54 drives the lifting lever to move up and down.

[0068] The two ends of the lifting bar are respectively connected to a set of lifting drive systems. The lifting drive systems are arranged relatively to each other and move synchronously under the action of the control system, so that the lifting bar can always remain horizontal, making the lifting process of the lifting bar simpler and the lifting bar pushing the goods more reliable.

[0069] The connecting plate 54 includes two clamping plates, one of which can cooperate with the teeth on the synchronous belt 53, and the other clamping plate is fixedly connected to the synchronous belt 53 by clamping the clamping plate that cooperates with the teeth of the synchronous belt 53.

[0070] The connecting plate 54 is provided with a mounting hole for the lifting lever. The lifting lever engages with the connecting plate 54 through this mounting hole, thereby raising and lowering the connecting plate 54 when the drive motor 51 is activated. To avoid the timing belt 53, the connecting plate 54 is provided with a mounting hole for the lifting lever at the position extending outward. Therefore, under the deadweight of the lifting lever, the connecting plate 54 will exert a certain torque on the timing belt 53. If the movement of the lifting lever is unstable, the effect of this torque on the timing belt 53 will be more significant.

[0071] The lifting drive system is also equipped with a guide mechanism parallel to the synchronous belt 53. A guide sleeve 61 is fixedly connected to the connecting plate 54, which cooperates with a guide rod 62. The guide rod 62 is arranged parallel to the synchronous belt 53. When the drive motor 51 is in operation, the connecting plate 54 moves up and down along with the synchronous belt 53. The cooperation between the guide rod 62 and the guide sleeve 61 makes the movement of the connecting plate 54 more stable, making the connecting plate 54 less likely to shake. This prevents the unstable movement of the connecting plate 54 from exerting a force perpendicular to the direction of movement on the synchronous belt 53. This force perpendicular to the direction of movement of the synchronous belt 53 could damage the synchronous belt 53 and shorten its service life.

[0072] In this embodiment, preferably, a lifting channel 21 cooperating with the lifting lever is provided on the telescopic fork 2 , and the connecting plate 54 is lifted and lowered along the lifting channel 21 .

[0073] The lifting drive system is arranged on the outside of the telescopic fork 2 so that the space inside the lifting drive system 2 can be used to accommodate the cargo, thereby improving the compatibility range of the compatible clamping telescopic fork to the cargo width size.

[0074] The ends of the lifting block rod pass through the lifting channel 21 and are connected to the connecting plate 54. The height of the lifting channel 21 is set to adapt to the lifting range of the lifting block rod. In order to avoid interference or friction with the connecting plate 54, the lifting channel 21 is usually set to be large so that both the connecting plate 54 and the lifting block rod can move along the lifting channel 21.

[0075] In this embodiment, preferably, a waist-shaped hole 541 is provided on the connecting plate 54 , and the lifting lever cooperates with the waist-shaped hole 541 .

[0076] The same lifting block rod is driven by a set of lifting drive systems. Since there may be errors in the synchronization of the two lifting drive systems at both ends, the lifting block rod may not always remain horizontal during actual use. If the lifting block rod is fixedly connected to the connecting plate 54, then when the lifting drive rod systems at both ends are not synchronized, the lifting block rod will easily get stuck during the lifting process, thereby affecting the smoothness of the lifting block rod movement.

[0077] Preferably, the hole on the connecting plate 54 that cooperates with the lifting lever is set to a waist-shaped hole 541, so that the lifting lever can slide along the waist-shaped hole 541 and tilt in the waist-shaped hole 541. The corresponding two ends of the lifting lever and the waist-shaped hole 541 are both provided with a margin. When the lifting lever tilts, the end of the lifting lever can move to a certain extent in the waist-shaped hole 541.

[0078] In this embodiment, preferably, a support plate 22 is provided at one end of the lifting channel 21 close to the cargo, and the support plate 22 limits the lifting stop rod.

[0079] Since the lifting bar can slide in the waist-shaped hole 541, when the lifting bar is lowered into place and contacts the cargo, since the lifting bar has a certain initial velocity at this time, when it interacts with the stationary cargo, the lifting bar may slide along the waist-shaped hole 541 and hit the end of the waist-shaped hole 541. Accordingly, under the action of this impact, the connecting plate 54 will generate a large lateral force on the synchronous belt 53. During operation, frequent exposure to such lateral forces will affect the service life of the synchronous belt.

[0080] Therefore, at the lower end of the lifting channel 21, a back plate 22 is provided near the cargo. During the process of the lifting stop bar descending, it will first be affected by the back plate 22. Under the action of the back plate 22, the lifting stop bar is pushed to a position close to the other side of the lifting channel 21. At this time, the horizontal position of the lifting stop bar is restricted, so the lifting stop bar can remain stable in the horizontal direction during the retraction of the telescopic fork and will no longer slide along the waist-shaped hole 541. Therefore, when the lifting stop bar encounters the cargo, the thrust of the cargo on the lifting stop bar will act on the side of the lifting channel 21, thereby protecting the synchronous belt 53.

[0081] Preferably, a guide slope is provided at the upper end of the support plate 22 , and the lifting block rod will enter the space between the support plate 22 and the other side surface of the lifting channel 21 along the guide slope during the process of descending.

[0082] Preferably, an elastic protective cover 43 is provided at the position where the lifting lever cooperates with the lifting channel 21. The elastic protective cover 43 has a certain thickness. When the lifting lever is pushed by the support plate 22, the elastic protective cover 43 will first abut against the lifting channel 21, and as the lifting lever continues to be pushed, the elastic protective cover 43 will deform to absorb the kinetic energy in the process, thereby preventing the lifting lever from contacting the connecting plate 54 and applying a large lateral force to the synchronous belt 53 through the connecting plate 54.

[0083] Similarly, when the lifting bar contacts cargo, the cargo generates a thrust on the lifting bar. The elastic protective sleeve 43 can buffer the impulse of this thrust, preventing lateral tension on the synchronous pulley 52 and protecting the synchronous pulley 52. ​​The elastic protective sleeve 43 also prevents significant wear when the lifting bar slides relative to the lifting channel 21, thereby improving the service life and positioning accuracy of the equipment.

[0084] In this embodiment, preferably, a stop position is provided on the lifting channel 21, and the lifting lever cooperates with the stop position when it descends into position.

[0085] The shape of the stop position is determined based on the shapes of the lifting bar and the elastic protective sleeve 43. In one embodiment, the stop position is arc-shaped. When the lifting bar contacts cargo, the cargo exerts a certain amount of pressure on the lifting bar. Under the action of this pressure, the elastic protective sleeve 43 of the lifting bar enters the arc-shaped stop position, supporting the lifting bar. Therefore, when the lifting bar pushes the cargo, the lifting bar does not exert force on the synchronous belt 53 through the connecting plate, thereby protecting the synchronous belt 53.

[0086] The present invention also provides a method for using the compatible clamping telescopic fork, the method comprising:

[0087] Step 1: Raise the lifting lever and extend the telescopic fork 2 forward;

[0088] Step 2: After the telescopic fork 2 is extended to its full position, the first lifting lever 41 at the front end of the telescopic fork 2 is lowered;

[0089] Step 3: The telescopic fork 2 retracts, and the first lifting lever 41 pushes the cargo forward, and the cargo moves into the fork body 1 through the loading plate 3;

[0090] Step 4: Lower the second lifting lever 42 behind the cargo, raise the first lifting lever 41, extend the telescopic fork 2 forward, and use the second lifting lever 42 to push the cargo to the target position.

[0091] Step 5: After the telescopic fork 2 is extended to the right position, it starts to retract until the telescopic fork 2 is retracted to the right position;

[0092] When the compatible telescopic fork is loaded, use steps 1-3; when the compatible telescopic fork is unloaded, use steps 4-5.

[0093] When the compatible clamping telescopic fork needs to load goods, the lifting lever is first raised, and then as the telescopic fork 2 is extended, the telescopic lever will pass over the goods from above the goods to the front of the goods, and then the telescopic fork 2 is extended into place. At this time, the first lifting lever 41 can be lowered. The height of the lowered first lifting lever 41 is lower than the upper end surface of the goods, and then the telescopic fork 2 begins to retract. The first lifting lever 41 can push the goods backward by pushing the front end surface of the goods until the telescopic fork 2 retracts to the initial position, and the goods are now on the loading plate 3.

[0094] Through the above process, the loading of goods by the compatible clamping telescopic fork is realized.

[0095] When the compatible clamping telescopic fork needs to unload the goods, it is only necessary to lower the second lifting bar 42 located behind the goods. At this time, the height of the second lifting bar 42 is lower than the upper end surface of the goods. At the same time, the first lifting bar 41 is ensured to be in a high position. Then the telescopic fork 2 is extended forward, and the second lifting bar 42 pushes the goods forward until the telescopic fork 2 moves into place. Since the first lifting bar 41 is in a high position, it can prevent the goods from being pushed back to the loading plate 3 again when the first lifting bar 41 is retracted.

[0096] When executing step 1, the second lifting bar 42 also needs to be raised to prevent the second lifting bar 42 from colliding with the goods when it is in a low position during the process of extending the telescopic fork 2 forward, because some cargo boxes may be knocked over after colliding with the second lifting bar 42.

[0097] At the end of step 5, the first lifting lever 41 is in the high position and the second lifting lever 42 is in the low position. These positions are maintained, and the positions of both lifting levers remain unchanged. To load cargo, only the second lifting lever 42 can be raised in step 1. However, before each movement of the telescopic fork 2, the control system must confirm the positions of both lifting levers. The telescopic fork can only be moved when the lifting levers are in the correct position.

[0098] In this embodiment, preferably, in step 1, the compatible clamping telescopic fork stops at a higher position. In step 2, after the telescopic fork 2 is extended into place, the compatible clamping telescopic fork first descends to a position where the front end height of the loading plate 3 is adapted to the bottom height of the cargo, and then the first lifting lever 41 descends.

[0099] When the compatible clamping telescopic fork is stopped at a higher position, the position of the lifting bar relative to the cargo is also higher, making it easier for the first lifting bar 41 to pass over the cargo from above to the front of the cargo. However, since steps 1-3 are part of the cargo loading process, if the loading platform 3 is at a higher position and the first lifting bar 41 is also at a higher position, there is a risk of the cargo tipping over when pushing the cargo onto the loading platform 3 in step 3. Therefore, after the telescopic fork 2 is extended to its full height, the position of the compatible clamping telescopic fork needs to be lowered slightly so that the height of the front end of the loading platform 3 is consistent with the height of the bottom surface of the cargo, making it easier for the cargo to move onto the loading platform 3. At the same time, the position of the first lifting bar 41 relative to the cargo is also lowered at this time, which can also reduce the risk of the cargo tipping over when pushing the cargo onto the loading platform 3.

[0100] During steps 4-5, the compatible telescopic fork unloads the goods onto the stacking rack. Preferably, during steps 4-5, the compatible telescopic fork can be stopped at a higher position. On the one hand, when the second lifting lever 42 delivers the goods toward the stacking rack, the goods move from a higher position to a lower position, which is more convenient. If the pushing speed is kept low, the pushing process is controllable. On the other hand, after being transferred to the stacking rack, the goods move horizontally. If the speed is controlled, even if the second lifting lever 42 is relatively high relative to the goods, the risk of the goods tipping over is very small. Therefore, it is unnecessary to set two stop positions for the compatible telescopic fork in steps 4-5, reducing the complexity of the control program.

[0101] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the scope of protection of the present invention.

[0102] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0103] In addition, the various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A compatible clamping telescopic fork, characterized in that: The invention comprises a control system, a fork body (1), a telescopic fork (2) slidably connected to the fork body (1), a loading plate (3) located at the bottom of the fork body (1), and a lifting lever located at the front end of the telescopic fork (2); Two lifting bars are provided, and the two lifting bars are spaced apart along the length direction of the telescopic fork (2). The front and rear lifting bars cooperate with the telescopic fork (2) to clamp the goods. The control system controls the extension and retraction of the telescopic fork (2) and the lifting and lowering of the lifting lever.

2. The compatible clamping telescopic fork according to claim 1, characterized in that: The compatible clamping telescopic fork also includes a lifting drive system, and both ends of the lifting lever are respectively connected to the lifting drive system; The control system is electrically connected to the lifting drive system.

3. The compatible clamping telescopic fork according to claim 2, characterized in that: The lifting drive system comprises a driving motor (51), a synchronous pulley (52), a connecting plate (54) and a synchronous belt (53) matched with the synchronous pulley (52); the connecting plate (54) is fixedly connected to the synchronous belt (53); and the end of the lifting lever is connected to the connecting plate (54).

4. The compatible clamping telescopic fork according to claim 3, characterized in that: A lifting channel (21) cooperating with a lifting block rod is provided on the telescopic fork (2), and the connecting plate (54) is lifted and lowered along the lifting channel (21).

5. The compatible clamping telescopic fork according to claim 4, characterized in that: A waist-shaped hole (541) is provided on the connecting plate (54), and the lifting and lowering lever is matched with the waist-shaped hole (541).

6. The compatible clamping telescopic fork according to claim 5, characterized in that: A support plate (22) is provided at one end of the lifting channel (21) close to the goods, and the support plate (22) limits the lifting stop rod.

7. The compatible clamping telescopic fork according to claim 4, characterized in that: A stop position is provided on the lifting channel (21), and the lifting lever cooperates with the stop position when it is lowered into position.

8. A method for using the compatible clamping telescopic fork according to any one of claims 1 to 7, characterized in that: Usage methods include: Step 1: Raise the lifting lever and extend the telescopic fork (2) forward; Step 2: After the telescopic fork (2) is extended to its proper position, the first lifting lever (41) located at the front end of the telescopic fork (2) is lowered; Step 3: The telescopic fork (2) is retracted, and the first lifting lever (41) pushes the cargo forward, and the cargo moves into the fork body (1) through the loading plate (3); Step 4: lower the second lifting lever (42) located behind the cargo, raise the first lifting lever (41), extend the telescopic fork (2) forward, and push the cargo to the target position with the second lifting lever 42; Step 5: After the telescopic fork (2) is extended to the right position, it begins to retract until the telescopic fork (2) is retracted to the right position; When the compatible telescopic forks are loaded, use steps 1-3; when the compatible telescopic forks are unloaded, use steps 4-5.

9. The method of use according to claim 8, characterized in that: In step 1, the compatible clamping telescopic fork stops at a higher position. In step 2, after the telescopic fork (2) is extended to the right position, the compatible clamping telescopic fork first descends to a position where the front end height of the loading plate (3) is adapted to the bottom height of the cargo, and then the first lifting lever (41) descends.

Images